Electrically-heated sadiron



2 Sheets-Sheet 2 J. F. LAMB 11111101111011.1111 HEATED SADIRON FiledJune 6 Jan. 15 1924.

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Patented Jan. 15, 1924.

UNITED STATES PATENT o1=1=1c1-:.

JOSEPH F. LAMB, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO LANDERS, FRARY& CLARK, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

ELECTRICALLY-HEATED SADIRON.

Application filed June 6, 1922.

To all whom it may concern:

Be it known that I, Josnrrr F. LAMB, a citizen of the United States,residing at New Britain, county of Hartford, State of Connecticut, haveinvented a certain new and useful Improvement in Illcctrically- HeatedSadirons, of which the following is a full, clear, and exactdescription.

My invention relates to electrically heated sad irons, and has for itsobject to provide a novel-and improved device of this character which issimple, strong and durable in construction and may be easily assembledand taken apart.

The several features of the invention will be clearly understood fromthe following description and accompanying drawings, in which,

Figure 1 is a longitudinal sectional view, partly in elevation, of anelectrically heated sad iron embodying the features of the invention intheir preferred form;

Fig. 2 is a sectional plan View taken on the line 22 of Fig. 1 withcertain parts broken away;

Figs. 3 and 4 are vertical sectional views taken on the lines 3--3 and44 of Fig. 1, respectively;

Fig. 5 is a detailed sectional view, partly in elevation and on anenlarged scale, taken on the line ST-5 of Fig. 1; and

Fig. 6 is a longitudinal section of a portion of an iron of a modifiedconstruction.

The electrically heated sad iron illustrated in the drawings is providedwith a base part 2, a top part or cover 4, and an operating handle 6.The base part 2 is provided with an upwardly extending marginal flange 8which is spaced from the edge of the-base part. A sheet 10 of asbestosor other heat insulating material rests on the upper edge of the flangeand a sheet metal plate 12 s positioned over the asbestos sheet and 1srovided with a plurality of depending ugs 14 which extend through slots16 in the edge of the sheet 10 and engage the inner side of the flange 8so as to hold the sheet in position over the flange and to protect'it.The sheet 10 and metal plate 12 cooperate with the flange to form aheating chamber in which an electrical heating element hereinafterdescribed is located.

The top part 4 of the sad iron is provided with a plurality of dependingribs 18 hav- Serial No. 566,272.

ing a honey-comb arrangement so as to provide air spaces between the toppart and the heating chamber. The top part or cover is provided with adepending peripheral lip 20 which surrounds and is spaced from theflange 8 of the base part. The flange 8 is provided with a series ofspacin lugs 22 which fit the inner wall of the hp 20. The lower edge ofthe lip 20 is bevelled inwardly and upwardly from the marginal surfaceof the base part. The spacin of the lip from the flang 8 and saidbevefiing of the edge of the lip reduce the conduction of heat from thebase part to the top part by reason of the air spaces thus formed.

Th rear portion of the top part is of hollow construction and isprovided with a rearwardly and downwardly inclined wall 24 having anelongated opening 26 extending transversely of the wall through whichextend terminal posts 28 for engagement with the socket member of anelectrical conducting cord, (Figs. 1 and 5). The mounting of theterminal posts 28 in the opening 26 comprises a metal strip 30 which issecured at its ends by screws 32 to the wall 24, extends over theopening 26, and is provided with spaced apertures 34. Two strips 36 ofinsulating material are positioned on opposite sides of the metal strip30 and provided with apertures 38 of smaller diameter than and inalinement with the apertures 34. The inner ends of the terminal posts 28are reduced in diameter and extend through said apertures in the strips30 and 36, and nuts 40 are screwed 0n the inner ends of the terminalposts to cooperate with flanges 42 on the posts to clamp the posts tothe stri s 30 and 36, washers 44 being interposed between the flanges 42and the outer strip 36 and between the inner strip 36 and the nuts 40.Binding screws 46 are screw-threaded in the sockets in the inner ends ofthe terminal posts 28 which are adapted to be connected with the heatingelement of the iron. With this construction the terminal posts 28 andtheir mounting maybe removed as a unit from the top part 4 of the ironupon removing the screws32. The heating element of the iron comprises acoiled resistance wire 48 of suitable alloy which is mounted on a seriesof annular spool shaped blocks 50.loosely mounted on pins 52 projectingupwardly from the top surface of the base part 2 of the iron within theflange 8. The blocks 52 are arranged in staggered relation in rowsdiverging toward the rear of the iron and the heating wire 48 is loopedabout the blocks and connected by conductors 54 with the binding screws46 of the terminal posts 28. Eachconsisting of the asbestos sheet 1.0and the metal plate 12 which engage the upper ends of the blocks. Theblocks 50 are provided with peripheral grooves forming flanges whichhold the coiled resistance or heating wire in position on the blocks,and the blocks 56 are provided with similar grooves forming flanges forholding the conductors 54 in position. To prevent any danger of the endportions of the coiled heating wire coming in contact with the metal ofthe iron, semi-cylindrical annular blocks 60 are loosely mounted onprojections 62 on the rear wall of the flange and are so positioned asto engage said end portions of the heating wire and hold it againsttheir blocks 50.

The sad iron handle comprises a U-shaped metal strap 64 having its endsconnected by the usual wooden handle. the top and base parts of the ironare secured together by means of a bolt 66 which extends through anaperture in thb U-shaped metal strap 64, an aperture in the top part 4,and apertures in the asbestos sheet 10 and metal plate 12 and isscrew-threaded into a boss 68 on the base part, an inverted cup-shapedspacing washer 70 being interposed between the strap 64 of the handleand the top of the top part 4 and surrounding the shank of the bolt. Thehandle is prevented from turning relatively to the top part by means ofshouldered studs 72 riveted to its strap 64 at opposite sides of thebolt 66 and extending into apertures or sockets 74 in the top part, thestuds being provided with spacing flanges 76 interposed between thehandle strap and the top part.

With this construction it will be apparout that upon removing the screws32 that secure the terminal posts and their mounting to the top part andby unscrewing the bolt 66 from the base part the handle and top part ofthe iron may be removed from the base and separated from one another. Byremoving the closures 10 and 12 from the flange 8 access may be had tothe heating element 48, and the mounting of the heating elementis such,as above described, that it may be easily removed and replaced.

The handle and.

As there are no projecting parts on the outer surface of the top part ofthe iron this surface may be easily polished.

Instead of making the studs 72 fast to the handle they may be cast. uponthe cover portion as shown at 7 8 in Fig.6, a boss 80 integral with thecover taking the place of the washer 70.

In order to compensate for the hollow construction of the rear portionof the top part of the cover which brings its center of gravity to thefront of its central portion, and so as to bring the center of gravityof the iron as a wholenear the center of the iron, the top surface ofthe base part of the iron is inclined upwardly and rearwardly as shownso as to thicken the rear portion of the base part and bring its centerof gravity to the rear of its central portion.

From the foregoing it will be apparent that a-simple, strong andwell-balanced iron is provided in which all of the parts thereof may beeasily assembled and taken apart.

While it is preferred to employ the specific construction andarrangement of parts illustrated and described, it is to be understoodthat this construction and arrangement is not essential except so far asspecified in the claims and may be changed or modified without departingfrom the broader features of the invention.

What I claim is:

1. A sad iron having, in combination, a base part having an upwardlyextending marginal flange spaced from the edge thereof, a top partcovering the flange and having a depending lip surrounding and spacedfrom the flange and engaging the margin of the base part witlrits loweredge bevelled inwardly and upwardly from said margin, an electricalheating element interposed between the top and base parts within saidflange, and means for detachably securing the top and baseparts'together.

2. A sad iron having, in combination, a base part, an upwardly extendingmarginal flange spaced from the edge thereof, a closure resting on theflange and co -operating with the flange to form a heating chamber, anelectrical heating element located in the heating chamber, a top parthaving a lip surrounding said flange and engaging the L margin of thebase part, and having a plurality of downwardly extending ribs engaginsaid closure to provide spaces between said closure and the top part,and means fordetachably securing the top and base parts together.

3. A sad iron having, in combination, a. base part having an upwardlyextending marginal flange, a closure engaging said flange to cooperatetherewith to form a. heating chamber, a plurality of blocks of Illinsulated material arranged in staggered relation on the base partwithin said heating chamber, a top .part engaging said closure,electrical terminals mounted on the top part, a heating elementcomprising a coiled wire successively looped about said blocks andhaving its ends connected with said terminals, respectively, and meansfor securin the top and base parts together.

4. g sad iron having, in comblnation, a base part having an upwardlyextending marginal flange spaced from the edge thereof, a sheet ofinsulating material resting on said flange to cooperate therewith toform a heating chamber, an electrical heating element located in saidheating chamber, a late of sheet metal resting on said sheet 0insulating material and having a plurality of depending lips extendingthrough slots in said insulated material and en aging the inner wall ofsaid flange to ho d the insulating material in place, a top part havinga depending lip surrounding said flange and engaging the margin of thebase part, and means for securing the top and base parts together.

5. A sad iron having, in combination, a base part, a top part having itsrear portion of hollow construction with a portion of the wall thereofinclined downwardly and rearwardl and provided with a transverse slot,an e ectrical heating element between said base and top arts, means fordetachabl securing the ase and top parts toget er, a supporting striparranged on the inner side of said wall, screws extending inwardlythrough said wall for detachably securing said supporting strip to saidwaL, terminals in the form of posts carried by and insulated from saidstrip, the same being for engagement with the socket member of anelectrical conducting cord, and means for electrically connectin theinner ends of said terminal posts and the ends of said heating element.

6. A sad iron having, in combination, a base part, an electrical heatingelement supported on the top surfaceof said base part, a top partenclosing said heating element and having its center of ravity in frontof its central portion, and means for de tachably securing the base andtop parts together, said base part having its center of gravity in therear of its central portion so as to bring the center of gravity of theiron-as a whole atapproximately the center of the iron.

7. A sad iron having, in combination, a

base part having an upwardly extending marginal flange spaced from theedge thereof, a top part covering the flange and havin a depending lipsurrounding and space from the flange and covering the margin of thebase part, an electrical heating element interposed between the top andbase parts within said flange, a handle part, and a single removablemeans for detachabl securing the top and base parts toget er.

JOSEPH F, LAMB.

